Means for installing subsurface tools



United States Patent Oce 2,942,671 Patented June 28, 19640 lVIEANS FORINSTALLING SUBSURFACE TOOLS Harry B. Schramm, deceased, late of Dallas,Tex., by Josephine Schramm, executrix, Dallas, Tex., assgnor to tisEngineering Corporation, a corporation of Texas Filed June 30, 1958,Ser. No. 745,687

11 Claims. (Cl. 166-218) This invention relates to means for installingsubsurface tools in an'oil well tubing string and, more particularly, tosuch means which are pre-set at the surface of the well, which bias thelongitudinal axis of the tool to be installed from the longitudinal axisof the tubing string when the tools and means are inserted in the tubingstring and which, without the use of other equipment, direct the toolinto an oiset pocket in the tubing string as the tool approaches theentrance to the oiset pocket during its downward travel in the tubingstring.

A principal object of this invention is to provide means for installingtools in an offset pocket in a tubing string, which means are pre-set atthe surface of the well so that iti will Vdirect a tool into the desiredoffset pocket without the necessity for any other type of equipmentother than conventional wire line equipment.

` Another object is to provide such means which cooperate with thepeculiarly internally configured tubing string to so'install the tool inthe desired offset pocket.

A further object is to provide such means which, when pre-set, willselect the desired offset pocket from a number of such oiset pocketslocated at vertically spaced apart positions in the tubing string inwhich to install the tool.

Other objects and advantages will become apparent in the course of thefollowing detailed description.

In the drawings, forming a part of this application, and in which likeparts are designated by like reference numerals throughout the same,

Fig. 1 is an elevational sectional view illustrating the installing of avalve in a preselected offset mandrel pocket.'

Fig. 2 is an enlarged sectional view ofthe valve installing meansillustrated in Fig. 1. Y

Fig. 3 is a perspective view of the guide shoe employed in the mandrelof Fig. l.

Fig. 4 is a sectional view taken on line 4-I4 of Fig. 1, with theinstalling means removed from the mandrel.

Figs. 5, 6 and 7 are views similar to Fig. 4 illustrating the manner bywhich preselected mandrels may have valves installed therein.

While the means of this invention can be employed to install varioustypes oftools in and laterally off-center of an oil well tubing string,it is described herein in use with a gas lift valve and an offsetmandrel having an oiset pocket in which the valve is to be installed, asshown in Fig. l.

Referring now to the drawings, the offset mandrel 10 may be one of theconventional types adapted to be made up in a tubing string 11, and hasa main bore 12 in line with the main bore of the tubing string and has aside pocket 13 oiset from the main bore 12. The oifset mandrel isprovided with a guide shoe 14 inserted in the upper portion of themandrel and integrally connected therewith. The guide shoe 14 is, ineiiect, a fixed cylindrical sleeve within the upper end of the main bore12 coaxially therewith, and has downwardly sloped upper cam surfaces 15and 16 commencing at the apex point 17 and extending downwardly to theslot 18 which has a depth equal to the thickness of the sleeve and whichextends downwardly to the lower end of the shoe. The location of theslot 18 with respect to the offset pocket 13 is an important aspect ofthis invention, as is more fully explained hereinafter.

The installing tool 20 comprises a mandrel 21 having a longitudinal bore22 laterally off-center of the central axis of the mandrel and oppositethe pin 23. Spring 24 within the bore forces the plunger 25 downwardlyagainst the upper end 26 of the eccentric connector 27. Since theconnector neck 28 is eccentrically connected to the mandrel by the pin23, the downward force exerted on the connector neck 28 by the plunger25 tends to cause the eccentric connector to pivot about the pin' 23;OiV

course, the eccentric connector will not pivot about the pin if it isrestrained from such movement by the Walls of the tubing or the guideshoe.

The mandrel 20 also contains aV radial bore 30 perpendicular to itslongitudinal axis. Locator key 31'is maintained in this bore by pin 32which passes through the mandrel and through the elongated slot 33 inthe locator key and is constantly urged outwardly by spring 34. Thelengthwise axis of the locator key liange 35 is parallel to the slot 18of the guide shoe, and the width oftheilange is less than the width ofthe slot 18.. Hence, it will be seen that as the installing tool 20|moves downwardly towards the olset mandrel. 10, the locator key willride along the'internal wall of the tubing string. Next, the locatorkeyv will be forcedA toward lthe slot 18 when `it cornes in contact witheither guide -shoel surface 15 or 16 so that the external ange of .thelocator key will slide downwardlyinto and through the slot 18 as themandrel passes through the guide shoe. As the mandrel 20 is rotated bythe coaction of the locator key 31 and the guide shoe surfaces V15 or16, the eccentric connector 27 is oriented in such manner as to pointtoward the offset pocket 13.

A `second mandrel 20 may be provided in whichl the locator key bore 30is rotated 90 about the central axis of the mandrel 21. In this case,the locator key 31whenI disposed within the slot 18 would cause theeccentric connector 27 to be directed at an angle 90 from that shown inVFig. I. However, should'the guide shoe 14 be also rotated in mandrel10,. as illustrated in Fig. 5; in the direction which the new bore 30 isrotated, the eccentric connector 27 would be directed as shown in Fig. lwhen the locator key is disposed within the slot 18. Similar results canbe obtained by providing 'additionalrn'andreis in which the locator keyvbore 30 is disposed at additional angles such as l and 270 '.tothatshown in Fig. l, suchv modifications being illustrated in Figs. 6 and 7.4`It is important to observe that whenthe bore a0 is rotatedv aspecified number of degrees in a 'given direction, the eccentricconnector will be. directed `towards the offset pocket, as'shown in Fig.l, onlywhen the guide shoe 14 is rotated an equal number of degrees inthe same direction.

lIn operation, the means of this invention may be em ployed to installtools in a number of olset mandrels 10Y made up in an oil well tubingstring. By way of illustration, it will 'be assumed that the tubingstring 11 contains ve offset mandrels, as shown in Fig. l, connected inthe tubing string 11 at predetermined elevations, with the first andfifth (uppermost and lowermost) each having a n guide shoe 14 disposedtherein, as shown in Fig. l, and

withY the second, third and fourth each having a guide shoe rotatedtherein by 90, 180 and 270, respectively, as shown in Figs. 5, 6 and 7.fln this situation, four installing tool mandrels 20 will be required toinstall a tool in each of the oiset pockets. The iirst mandrel will beconfigured, as shown in Fig. 1, and will be employed to install a toolin the firstV and fifth offset pockets. The Vse :ond,.third and fourthmandrels (not illustrated) will each have a locator key bore30 rotated90, 180 andV 270, respectively, in theV same direction` in which theguide shoes 14 of the second,third and fourth oifset mandrels 10 wererotated.

Y v Afterlit has been determined in whichoifset pocket a tool, Ysuch asa conventional'gas lift valve 36,'is to be installed, thecOrresPondingVVmandrel 20 is selected and made Yuprin the conventional wire linebyrthreadedV engagement at. 37. pAn eccentric connector 27 is attachedto the running tool 38, and the flanged end 39 of the Vi valve 36 isinserted in the running tool and connected thereto, asby tangentialshear pins 41. After the'ecfV centric connector 27 is. connected to themandrel 20 by pin 23, the entire assembly Yis lowered into the tubingstring. 1f the valve 36 is to be installed in the tirstoset Vmandrel,the valve Vand eccentric connector will be directed toward therpocket 13of the offset mandrel, as

' Yshown in VFig'. Yl, when the locator key flange 35 passes through,theL slot 18, as previously described. However, ifY itis desired toinsert a valve in the third oifset mandrel,

Y the proper installing mandrel 20-will be used. When this Y mandrelpasses through the irst offsetr mandrel, the eccentric connector andthevalve 36 will not be directed at theV pocket 13 Vbut in the oppositedirection, and the tool will continue downwardly in the tubing stringuntil 1 Vthetll'ird offset mandrel is reached.V VAtV that tin1e,rtheIlocator key will be directedain the directionV opposite to thatshownirin Fig; 1, and will-pass through'the slot 18Y ofthe guideshoeshown in Fig. l6, so that the eccentric Y' connectorwill be directedtoward the offset pocket, and Y the valvewill enter the pocket asY themandrel 20'passes belowtheV guide shoe of that offset: mandrel. fInlikei Ymannelifatool may be'Y installed in the'second and fourth offsetmandrels merely by selectingrthe-proper Vmandrel,V 20 in accordance withthe particular mandrel 10 previous- Y ly made up in the tubing string.lIt is Vto be noted, .how- 1 ever, that a valve cannot be inserted inthe fth Voffset mandrel until one has been installed in the first olfsetthe corresponding mandrel 20isjattached to the Vwire line at one end andto the eccentric connector 27 on the Y other end, to which is connecteda conventional iishing Ytool (not shown) which can engage the ange 3910ithe valve 36. 'I'he fishing tool must be of suicient length to engagethe iiange 39 while the locator key 31 is still disposed in the slot 18.When the shing tool contacts the .valve 36, the wireline is jarreddownwardly-in aiconven#V tional manner until the fishing tool grips theange 39.. Now, the entire assembly of valve, fishing tool,feccentricconnector, -mandrel 20 and' wire 'lineris retracted in the conventionalmanner.

Y Y With this invention, it 's Vto be observed that the force necessaryto direct the valve towardthe desired odset pocket is provided at thesurface ofthe earth, that the force is longitudinally directed when inthe well, and 4that no additional equipment of any type is required inthe offset mandrel to s'o deect the valve to be) installed. Y

It is'to be understood that the form of the invention, herewithY shownand described, is to be taken as apref ferred embodiment of the same,and that various changes YinY theV shape, size and arrangement Yof partsmay be ref sorted to without departing'from'the spirit of the inventionor the scope of the attached claims.

Having, thusrdescribed the invention, what is claimed and desired toYsecure by Letters Patent is:

1. Apparatus of the characterY described comprising an r offset mandreladapted to be connected in a tubing string,

' said votisetrmrandrel Vhaving arverticalmain boreextendingtherethrough, meansfforming an open ftopped, welltool receiving .pocketwithin said,v offsetVV mandrelgsaid pocket havingits; longitudinaLaXisoffsetjfrom said .mainV bore,

a kguide shoe comprising a'cylinlricalV sleeve mounted in 'the upperendVof said :bore fcOaXally therewith, said sleeve ,havingk alongitudinal-1slot extending from vthe.' upper surface'fto -the. lowerend thereof,thefvertical'plane` determinedby said slot and themain boreVaxis andthe vertical plane kdetermined by said offset pocket-axisgand Ymandrel; a valve is installed in the first olset manf drel,1 and Vasecond valve is run into the well usingY the f same` r mandrel 20, thetool will be deflected from the offset pocketandpwill'rcontinuedownwardly to the fth'offset t .1f desiredthe disadvantage describedalovefbf'fhe lack ofdifferentiationbetween therst and fth offset tancebetweenthe guideV shoe 14 and the upperend of lthe Y mandrel canbeovercome by the'invention by increasing Y Y jY Ythe length-ofthe fthotset mandrel to increase' the dise p ffsetf'pocke't; 13thereof. Then,when it.,is desiredto tricV connector: 27 will be constrained.fromfrotationaboutV Y installa valvezin thisfoifsetrmandrelpalonger.running'. A tool -38 isjrused'fsoVA that the' valve 36 willenterthepocltetrr Y tivhenrtheV installingfmandrel'Zllris'passingzthrough the guide shoe sloti18. i The Yvalye936 will not beinserted Y inthe VVoffset pocketfof the frst'mandrelsince the .eccenfpinV 23fby the tubing 'stringrwhen-the valve 36 isv atthe 1 levelofthetop of Ythe offset pocket.` 'Iphe same principle will lapply if it isdesired to differentiate between the second andra sixtlr offset mandrel10 if each has the `guide Y shoejslotr ,18,o1iented in the same mannerWith respectv to the offset pockets thereof.

said main bore axis being .angularly relatedfrelativeto oneanotlier bya- .predetermined angle, aV running 1tool comprising an Yelongatedmandrel adapted to pass longitudinally through said sleeve,.alocatorrkeyfextending radially outwardly from said running toolmandrel,said

key being Vadapted' to fit withinsaid sleeveislohan elongatedconnectormembenmeans. connectingthe` upper end of said, connector memberto thelower end of said 'running toolfmandrel for pivotal movement of saidcon- Ynectorrmember,relative tosaid runningtool mandrelV in asinglepredetermined Aplane which-includesltheA axiszof said running toolmandrel, means on the lower end of saidconnector member for releasablyengaging afwell tool,Y said running Vtool mandrelandgconnector memberhaving v'their axeslinalignment at 'one :relative positiontherebetween,` land spring meansiactng between saidY running toolmandrelY andY connector -member'forrnormally biasing said connectormember Vto pivot about said running Y toolY mandrel in saidpredetermined'` planeptogaposition *wherein said .running toolmandrelfand Vconnector memberlaxes areout of alignment, saidYpredetermined plane and the plane dened jbyV therrunning tool mandrelaxis andthe locator key beirigangularlyvv related relative ,t0l

Vone another by said -predeterminedrangle, of saidV oifset A mandrel.V t

Y Y. After the valve has been installed in the offset pocket,

the wire line isV jarred'upwardly, causingthentangential shear pins41-,to fail.v Then, theV entire assembly of WireV line, mandrel 20,eccentric connector Y27 and running tool v 2. Apparatus of the characterdescribed comprising an offset mandrel adaptedlto berrconnected inatubingstring,

' saidoiset mandrel having 'a vertical main Vbore extendingtherethrough, means forming an open topped, well Ytool receivingpocketwithin said'oifset mandrel, said pocket having its longitudinal axisoffset from said main bore,',a guideshoe comprising acylindrical sleevemountf ed in the upper end of said'bore coaxially therewith, said Ysleeve having a longitudinal'slotr-extending from thenpper surface gtothe lower end thereof, said sleevehaving its upperY surface slopingupwardly from each side/of said slot, the vertical plane determinedbysaid slot and win main bore axis and the vertical plane determined bysaid ollset pocket axis and said main bore axis being angularly relatedrelative to one another by a predetermined angle, a running toolcomprising an elongated mandrel adapted to pass longitudinally throughsaid sleeve and having a radial bore therein, a locator key disposed insaid radial bore, spring means for urging said key radially outwardlyfrom lsaid running tool mandrel, said key having an outer vertical angeadapted to t within said sleeve slot, said flange having a downwardlyand outwardly sloping upper surface, an elongated connector member,means connecting the upper end of said connector member to the lower endof said running tool mandrel for pivotal movement of said connectormember relative to said running tool mandrel in a single predeterminedplane which includes the axis of said running tool mandrel, means on thelower end of said connector member for releasably engaging a well tool,lsaid running tool mandrel and connector member having their axes inalignment at one relative position therebetween, and spring means actingbetween said running tool mandrel and connector member for normallybiasing said connector member to pivot about said running tool mandrelin said predetermined plane to a position wherein said running toolmandrel and connector member axes are out of alignment, saidpredetermined plane and the plane dened by the running tool mandrel axisand the radial bore therein being angularly related relative to oneanother by said predetermined angle of said offset mandrel.

3. A. well installation comprising a tubing string, a plurality oftubing mandrels connected at predetermined elevations in said tubingstring, each tubing mandrel having a' vertical main bore extendingtherethrough, means forming an open topped, well tool receiving pocket-withing said tubing mandrel, said pocket having its longitudinal axisoffset from said main bore, and a guide shoe comprising a cylindricalsleeve mounted in the upper end of said bore coaxially therewith, saidsleeve having a longitudinal slot extending therethrough from the uppersurface to the lower end thereof, the vertical plane determined by saidslot and the main bore axis and the Vertical plane determined by saidoffset pocket axis and said main bore axis being angularly relatedrelative to one another by a predetermined angle, and wherein saidpredetermined angle is different for each of said tubing mandrels.

4'. A well installation comprising a tubing string, a plurality oftubing mandrels connected at predetermined elevations in said tubingstring, each tubing mandrel having a vertical main bore therethrough,means forming an open topped, well tool receiving pocket within saidtubing mandrel, said pocket having its longitudinal axis otiset fromsaid main bore, and a guide shoe comprising a cylindrical sleeve mountedin the upper end of said bore coaxially therewith, said sleeve having alongitudinal slot extending therethrough froml the upper surface to thelower end thereof, said sleeve having its upper surface sloping upwardlyfrom each side of said slot, the vertical plane determined by said slotand the main bore axis and the vertical plane determined by said olsetpocket axis and said main bore axis being angularly related relative toone another by a predetermined angle, and wherein said predeterminedangle is dierent for each of said tubing mandrels.

5. A well installation comprising a tubing string, a plurality of tubingmandrels connected at predetermined elevations in said tubing string,each tubing mandrel having a vertical main bore extending therethrough,means forming an open topped, well tool receiving pocket within saidtubing, mandrel, said pocket having its longitudinal axis. oiset fromsaid main bore, a guide shoe comprising a cylindrical sleeve mounted inthe upper end of said bore coaxially therewith, said sleeve having alongitudinal slot extending from the upper surface to the lower endthereof, the vertical plane determined by said slot and the main boreaxis and the vertical plane determined by said related relative to oneanother by a predetermined angle, and wherein `said predetermined angleis different for each of said tubing mandrels, a running tool adapted toinsert and remove a well tool in and from the oiset pocket of a selectedone of said tubing mandrels comprising an elongated mandrel adapted topass longitudinally through the sleeve of said tubing mandrels, alocator key extending radially outwardly from said running tool mandreland adapted to lit within said sleeve slot, an elongated connectormember, means connecting the upper end of said connector member to thelower end of said running tool mandrel for pivotal movement of saidconnector member relative to said running tool mandrel in a singlepredetermined plane Iwhich includes the axis of said running toolmandrel, means on the lower end of said connector member for releasablyengaging a well tool, said running tool mandrel and connector memberhaving their axes in alignment at one relative position therebetween,and spring means acting between said running tool mandrel and connectormember for normally biasing said connector member to pivot about saidrunning tool mandrel in said predetermined plane to a position whereinsaid running tool mandrel and connector member axes are out ofalignment, said predetermined plane and the plane deiined by the runningtool mandrel axis and' said locator key being angularly related relativeto one another at an angle corresponding to the predetermined angle ofthe selected one of said tubing mandrels.

6. A. well installation comprising a tubing string', a plurality oftubing mandrels connected at predetermined elevations in said tubingstring, each tubing mandrel `having a vertical main bore extendingtherethrough, means forming an open topped, Well tool receivingpocketwithin said tubing mandrel,` sai-d pocket having its longitudinalaxis offset from said main bore, a guide shoe comprising a cylindricalsleeve mounted in the upper end of said bore coaxially therewith, saidsleeve having a longitudinal slot extending from the upper surface tothe lower end thereof, said sleeve having its upper surface sloping.upwardly from each side of said slot, the vertical plane determined bysaid slot and the main bore axis and the vertical plane determined bysaid offset pocket axis and said main bore axis being angularly relatedrelative to one another by a predetermined angle, and wherein saidpredetermined angle is different for each of said tubing mandrels, arunning tool adapted toinsert and remove a well tool from the offsetpocket of a selected one of said tubing mandrels comprising an elongatedmandrel adapted to pass longitudinally through the sleeve of said tubingmandrels and having a radial bore therein, a locator key disposed insaid radial bore, spring means for urging said key radially outwardlyfrom said running tool mandrel, said key having an outer vertical angeadapted to ii't within said sleeve slot, said flange having a downwardlyand outwardly sloping upper surface, an elongated connector member,means connecting the upper end of said connector member to the lower endof said running tool mandrel for pivotal movement of said connectormember relative to said running tool mandrel in a single predeterminedplane which includes the axis of said running tool mandrel, means on thelower end of said connector member for releasably engaging a well tool,said running tool'mandrel and connector member having their axes in`alignment at one relative position therebetween', and `spring meansacting between said running tool mandrel and connector member fornormally biasing said connector member to pivot about said running toolmandrel in said predetermined plane to a position wherein said runningtool mandrel and connector member axes are out of alignment, saidpredetermined plane and the plane defined by the running tool mandrelaxis and the radial bore therein being angularly related relative to oneanother atan angle corresponding to the pred'etermined angle of theselected one of said mandrels.- A t Y -Y f `Yv7.: A YVwell installationcomprising Va tubing string, a plurality of tubing mandrels lconnectedvatpredetermined elevations in said tubing string, each of said tubingmandrels havingraligned upper and lower necks and a main bore extendingbetween said necks, means forming an open topped, Vwell tool receivingpocketV within-said oise't mandrel, said pocket having its`longitudinalaxis offset from said main bore, a` guide shoecomprising a cylindricalsleeve mounted insaidupper neck coaxially there- Vwith,fsaid sleevehaving a longitudinal slot extending from theupperY surface to the lowerend thereof, the vertical plane determined by said slotV and the mainbore axis bing Y and the vertical plane determined by said odset pocketaxis and-.saidV main bore axis" beingiangularly related relative to one`another by a predetermined angle and whereinlsaid predetermined angle isdifferent for each of said'tubing mandrels, a plurality of running toolseachV comprising an elongated mandrel adapted tol pass longitudnallythrough the sleeves of said tubing mandrels,'a locator'key projectingradially outwardly from said'running tool mandrel and adapted to itwithin said sleeve slots, an elongated connector member, meansconnecting the upper end of said connector member to the lower Vend of`said running tool mandreltorpivotal movement of said connector memberrelativeV to 'said running Ytool mandrel in a singleV predeterminedplane which includes the Vaxis of V-said running toolY mandrel, means onythe Vlower Y end of said connector member for releasably engaging a'wellftool,V saidfgrunning -tool mandrel and connector "memberihavingtheir axes in alignmentrat one relative Y positiontherebetween,` andspringmeans acting betweenY said ru'r'iriing"tooLmandreLandconnectorlmember for Vnormally:biasingsaid connector'memberto pivot about saidrunning tool-mandrel rin said Vpredetermined plane pluralityof tubingmandrels connected at predetermined elevations insaid tubing string,each tubing mandrel having a :vertical mainbore extending` therethrough,means i Vforming an'open topped, well .tool receiving pocket With-A Yin` said tubing mandrel, said pocket having its longitudinalV axisoffsetv from'sad main bore, a guide shoe comprising la'cylindricalsleeve mounted in the'upper end of said bore Y coaxiallyf therewith,said sleeve having a llongitudinalY slot tool mandrel, said key havingan outer vertical .flange adapted to iit within'. said sleeve slot, saidangerhaving a downwardly Vandi outwardly sloping upper surface, anelongated .connectorzmemben means connecting the yupper end of saidconnector member to the lowerfend of said; running Vtool lmandrel forpivotal movement of. said connector member relative to said running'toolVmandrel in a single predeterminedplane -whichfincludesftheaxis of saidrunningftool mandrel,V means on Vthe lower end of said connector memberfor relea'sablyengaging a well tool, said running tool mandrel.andiconnector member having their axes in alignment at'onerrelativeposition therebetween, and spring means acting .between said runningtool mandrel and connector member for normally biasing said connector.member'to pivot` about saidrunning tool mandrelrin said predeterminedplane tova.posi

Y Ytion -wherein-'said .running vtool mandrel andrconnector member. axesare out Yof alignment,said predetermined plane and the plane deiined bythe running toolzmandrel axis and the radial bore therein beingangularly related relative to oneanother by ka predetermined, angle,Said last predetermined angle being different for each'of saidrunningtool mandrels and wherein one each of said running tools has itssaid predetermined'angleequal tothe predetermined angle of one each ofsaid predetermined angles of said tubing mandrels.V Y

1- 10. -A runningrtool comprisingan elongated mandrel having a radialbore therein, a locator key disposed;` in

Y said radial bore, spring means for urgingrsaidkey'radially Lrunning'tool'mandrelffor pivotal movement of said con-Y j to'la positionwhereinfsaid running .tool mandrel andv con-v `neetor Ymember axes areout of alignment,VV said predetermined plane and the plane dened'bythe'running tool mandrel axis and saidV selector key being angularlyre-V v nectorV memberv having theirY axes inalignme'nt, at onev nectormember relativeY toY said mandrel in asingle predetermined planewhich'includes. theaxisof saidgmand'rel, means on the lowerV endof saidconnector member for releasably engaging av well tool, said mandrel andconrelative position therebetween, and spring means ingengagement 'withlsaid mandrel and connectorfmemberV for normally biasing Vsaid connectormember topivot about Y said mandrel ,to a position in said predeterminedplane whereinsaidY mandrel and connectormember axes are out ofalignment, said predetermined plane and the plane deiined by the mandrelVaxis and theradial bore therein being angularly related `relative toeachotherkby a predetermined angle. Y

t l1l. A running tool comprising anelongated mandrel,

a vlocatorulteyV extendingV radially outwardly'v from said Y mandrel,Van elongated connector member, means .con-

extending from the upper surfaceV to the `lower end there of, Vsaidsleeve having its upperr surface sloping upwardly from'eachside of saidslot, the vertieal plane determined Y bysaidrslotfand the main bore'axisandthe vertical plane determined' by said olset pocket axis and saidmainrbore axis'being angularly related relative to oneV anotherV by a YVpredetermined angle and wherein said predetermined Aangle is diierentfor 'each of said tubing mandrels Ya plurality of running tools eachcomprising an elongated Y mandreladapted to'passlongitudinally throughthe sleeves Y Y t of said tubing mandrels and having a radial `boretherein, Y 'g aplocator key disposed Vin said radial bore,spring'means`V for urging said'lre'y radially outwardly from 'saidrunning VnectingtheupperV endfof saidrconnector member lto the lowerjendof said runningtool mandrel for pivotal move- Y ment'of saidconnectorymember relative tosaid mandrel in aI singleipredetermined plane whichincludes the' axis of saidrmandrel, said mandrel and connector memberhaving their axes in alignment atrone relative position, l Ytherebetweemand spring means in engagement with said Y mandrel andconnector member for normally biasing said connector member to Y pivotVabout said mandrel to a position 1n saidV predeterminedplanerwhereinrsaid mandrel and connector memberaxes are out ofalignment, said predetermined plane'and the plane deiinedY by the runmngtool mandrel axis and the radial keyvibeing angularly relatedl relativeto eachother by Va predetermined angle. Y Y Y l References cijfea in'the nienf'ihis patetf; j i UNITED VSTATES PATENTS 'I f 2,664,162'Howard'ef ai; fr pnrr- Dea 29, 1953 27,828,698 Bryanl..-;i Aprjl, 1958

